Lynne Curtin is going into the new year as a newly single woman. The Real Housewives of Orange County star has filed for divorce from Frank Curtin, TMZ reports.Winter TV's must-see new showsCurtin cited "irreconcilable differences" as the reason behind the split and has requested spousal support. The couple have been married 22 years, but separated in January. They have two children together: Raquel, 24, and Alexa, 21.Poll: Who don't you want to see in 2013?The reality star and her family appeared on Seasons 4 and 5 of Real Housewives of Orange County.